VW Code 06921
06921 Description And Summary : |
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The problem is about diesel particle filter: excessive soot accumulation the system depends on oil pressure to switch between cam profiles ignition coil 'c' secondary circuit, malfunction or change ignition coil 'b' secondary circuit, malfunction is the final reason of the code. |
06921 Possible Causes:
06921 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Clutch Position Sensor Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor A Circuit Low Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 06921 Code
- Inspect all the connections exhaust pressure sensor, low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns